Odrade, here is another way to look at it...
Everyone has total control over thier own lives. Nobody can control someone else's life. The only way a person can be truly happy is if they invest their time in activities and set goals that bring them enjoyment. True satisfaction does not come from giving commands to other people, or putting guilt trips on them.
Your parents are miserable people. It's their choice to stay in the org and be controlled by it. They have the choice to come out of it, regardless of whether they were raised in it or not. People have the ability to change their personalities. It takes a lot of work, but it can be done. Leaving the org involves changing one's personality. If your parents aren't willing to change, they'll keep their JW beliefs as part of their personalities. You cannot separate the two when the beliefs are deeply rooted in one's personality. The two have become one. Only your parents can separate what is their true personality, and what is JW inflicted. You have no choice but to accept their personalities as they stand. The best you can do is try to make them see the light. It's only after they see the light that they can outroot the JW beliefs they have, and then their true personalities can shine.
My suggestion is to live your life the way you want to. Your parent's opinion doesn't matter anymore. You're no longer under their care. You cannot built happiness on the foundation of your parents. Your building will keep crumbling. Build happiness on the foundation of yourself. The building will never crumble, and will keep getting taller. Keep your life in your own hands, not in someone else's.